Multi-character selection breeding method of fish and shrimp

A technology of selective breeding and traits, applied in fish farming, application, climate change adaptation, etc., can solve the problems of strong subjectivity and randomness, affecting the comprehensive genetic progress of fish and shrimp breeding, and low breeding reliability and accuracy. Achieve the effect of eliminating subjectivity and arbitrariness, achieving additivity, high reliability and accuracy

Active Publication Date: 2013-12-04
YELLOW SEA FISHERIES RES INST CHINESE ACAD OF FISHERIES SCI
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Problems solved by technology

However, in this method, it is not clear how to determine the percentage value of breeding target traits, and in practical applications, it is generally assigned based on production and breeding experience, which is highly subjective and arbitrary, resulting in low breeding reliability and accuracy. Comprehensive genetic advances impacting fish and shrimp breeding

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  • Multi-character selection breeding method of fish and shrimp
  • Multi-character selection breeding method of fish and shrimp
  • Multi-character selection breeding method of fish and shrimp

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Embodiment Construction

[0041] The technical solutions of the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.

[0042] Please refer to figure 1 ,Should figure 1 A flow chart of an embodiment of the method for calculating the weighted value of the target traits of fish and shrimp breeding is shown. This embodiment takes the Chinese prawn as an example, and describes in detail the calculation method of the weighted value of the target trait of prawn breeding.

[0043] Step 11: Obtain testing plan and seed saving plan.

[0044] Penaeus chinensis is one of the important species of marine culture in my country. In the past ten years of aquaculture production, WSSV (white spot syndrome virus) disease of prawns in China has become more serious, and problems such as the deterioration of the aquaculture environment have become more prominent, and its output has also been declining. , excellent cultured species has become the p...

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Abstract

The invention discloses multi-character selection breeding method of fish and shrimps. The method comprises the following steps of: firstly obtaining individual selection indexes and family selection indexes according to measured values of breeding target characters, then reserving stocks and hybridizing according to the selection indexes, building family mating groups and finally obtaining bred populations of the next generation. Moreover, when the individual selection indexes are obtained, the stock reservation rate and the heritability of breeding target characters are firstly calculated according to the measured values of the breeding target characters, expected selection intensity is calculated according to the stock reservation rate, then an expected selection response and a corresponding weighted value of each breeding target character are obtained according to the expected selection intensity, the heritability and the standard difference of a standardized breeding value, and finally the individual selection indexes are obtained by using the weighted value. Therefore, the subjectivity and the randomness during calculation of the weighted value are eliminated, the reliability and the accuracy of the breeding method are high, and the comprehensive genetic progress of multi-character selection is improved.

Description

technical field [0001] The invention belongs to the technical field of aquatic genetics and breeding, and in particular relates to a method for selective breeding of multiple traits of fish and shrimp. Background technique [0002] Modern selective breeding research and practice in aquatic products have shown that simultaneous selection of multiple traits can improve the comprehensive genetic progress and economic benefits of breeding objectives. In the current multi-trait selective breeding research, the selection or elimination of families or individuals is generally based on the selection index method. When formulating the individual selection index, it is necessary to assign different weighted values ​​to each breeding target trait. In animal husbandry breeding research, the weighted value of breeding target traits is defined as the economic weighted coefficient, which is usually calculated by trait economic analysis methods such as profit equation method, difference me...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01K61/00
CPCY02A40/81
Inventor 栾生孔杰罗坤张天时王伟继孟宪红
Owner YELLOW SEA FISHERIES RES INST CHINESE ACAD OF FISHERIES SCI
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